Type-writing machine.



J. J. COOPER.

TYPE WRITING MACHINE.

APPLICATION FILED FEB. 1, 1908.

Patented Aug. 3, 1909.

2 SHEETS-SHEET 1.

Wnees: mi

J. J. COOPER.

TYPE WRITING MACHINE.

APPLIGATION FILED H1B. 1, 1908.

Patented Aug. 3, 1909.

2 SHEETS-SHEET 2.

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JOHN JOSEPH COOPER, OF LONDON, ENGLAND, BSIGNOR TO UNDERWOOD TYPEWRITER COMPANY, OF NEW YORK, N. Y., A CORPORATION OF NEW JERSEY.

TYPE-WRITING MACHINE No. necesa.

Specification of Letters Patent.

Patented Aug'. 8, 1909 Application led February l, 1908. Serial No. 413,730.

vTo all whom it Pmay concern:

Be it known that L Jorix Josiirrr Coornii, a subject oi the King of Great Britain, residing in the city ol London. England, have invented certain new and useful limprovements in TypefWi-iting Machines, ot' which the following is a specii'ication,

rllhis invention relates to the paper feeding devices or revoluble platens ot typewriting machines, and particularly to the means whereby the paper is ted or moved in linespaciiig direction.

rl`he invention more particularly deals with machines used t'or filling; in forms or printedv blanks, and its principal objectI is' to facilitate Writinl upon such blanks.

lt has been the custom for the operator to insert a blank in the machine` and adjust the same, so that the first line ot' writingmay fall upon the first blank space. Such adjustment is accomplished either by rotating the platen, or by-castiiig ott' the pressure rolls and adjusting the paper independentlyv around the platen` or by casting` ottl the usual linespaee wheel; but -in any case, it is neeessary for the operator to use the eye in bringing the irst ruled or blank line to the printing point. After writing,` said line. it is often necessary to advance the paper much more than'is custonniry for ordinary line spacing, in order to bring the sheet to position to till in the next blank, and so on down the page, it being necessary for the operator always to stop and etfect the final adjustment of each line by the eye. which is a time-consuming operation yand a great obliection where large numbers ot similar blanks are to be filled in.

'lhe niainobject ot' my invention. theret'ore, is to enable a less laborious method to be used for advancing the sheet t'rom one blank line to another and to provide for usual revoluble platen means for mechan-` ically arresting its rotation at a succession of predetermined intervals ot' lgreater or less length as may be desired. suitable means being provided for enabling the device to bel used with various kinds of blanks or forms. l connect to the platen a succession of stops, and arrange a detent to cooperate with the same .st/c'um, whereby, after the leading edge ot the sheet or blank is inserted in the usual manner between the platen and the pressure roll, the platen may be rotated until arrested by the, lirst of said stops, thereby advancing the sheet to the' exact position to Vreceive the first line otl writing, without the necessity of adjusting said sheet by the eye. llhen the line is written and the platen again advanced until arrested by the next stop, and the second blank is filled in, and so on until the entire sheet is written. 'Frequently the length ot' the blank is greater than the circumference of the platen, and l theretoi e provide t'or mechanically arresting the platen at a succession of predetermined regular and irregular intervals, as the case may beA throughout a cycle consisting of a plurality ot' revolutions of the platen. This is done by arranging the stops in a helix or spiral. and arranging for the'detent after completing the helix` to go back to the beginning thereot' at the completion of writing the sheet. so as to be in proper position at the beginning` o't the next sheet. The stops are preferably in the torni ot pegs or screws independeinly insertible in any of a helical series of holes toi-med upon the periphery of a barrel` the latter being connected to the platen by gearing, which causes the barrel to rotate faster than the platen. The platen is preferably operated by means ot' a lever or crank, which by means ot' a pawl4 turns a ratchet wheel: the latter being,` connected by nlovemerit-multiplying gearing to the platen, so that a single swinelof the lever may effect, a substantial turning movement of the platen. Means are proyidedto release the detent after each arrest of the platen. Each stop is preferably individually adjustable to effect fine variations in the positioning of the platen, to enable the writingto fall accurately upon the desired line upon the. sheet. ln order that the detent may follow the lielical series of holes, which may be regarded as a helical rack, said detent is caused to move lengthwise of the barrel-that is` to traverse the helix at a 1'ate' correspondingto the pitch of the helical convolutions. For this purpose. the detent is mounted to slidey ona guide which is parallel to the, axis ot Cit the stop barrel, and is connectedto a'suit'able` cam. A spring returns the slide and detent after the writing of each sheet.

1n the accompanying drawings, 4Figure 1 is a/plan illustrating my improvementsap plied to the platten yoit' the well known I Undei-wood typewritin'g machine. Fig."2 is 4an end elevation of parts vseen'at 1"ig.1.

Fig. 3 is an end` elevation showing vthe manner ot' releasing the platen arresting detent.

lTig. 4 shows the platen and sheet having been advanced, and the platen arrested by the detent and a stop. llig. 5 is a front elevation. Fig. G illustrates the detent-carry'- the latter extending along the platen and being journaled in the platen framev ends. A pawl 10 pivoted upon said crank or lever 8 is pressed by a spring 11 into engagement with the teeth ot' a ratchet wheel 12 lixed upon said shaft 9, whereby the crank is enabled torotate-the shaft. A gear 13 fixed upon the other end ot the shaft meshes with afpinion 14 fixed upon the platen axle 2, whereby the platen is given preferably two revolutions to a single revolution of the ratchet wheel 12. Also fixed upon the platen axle 2 at the same end of the platen as the crank 8 is a gear 15, meshing with a pinion 1G, which is lixed to al barrel 17, both 'pinion and barrel mounted loosely upon the shaft 9, so as to turn independently thereof. A

helical series of holes or perforations 18 eX- tends around the barrel 17, and as many stop` pins 19 as may be necessary are inserted in the proper holes to correspond with the blank line on the sheet to be written. Owing to the movement-multiplying gearing 15,

16, the periphery of the barrel 17 travels about twice as fast as that otn the platen, and the holes 18 are sutliciently close together, so that the adjustment oi.E the stop pins may correspond approximately with the blanks on almost any kind of a blank form. |The stops preferably .consist of the heads of screws which are threaded into the holes 18. lVhen the handle 7 is pulled lforward as aforesaid, the platen and stop barrel or rack are advanced until the lirst stop 1.9 is engaged by thc nose 20 of a pawl 21, whereby the barrel and platen are arrested, 4as at Figs. 2 and 4, in position for the insertion ot a sheet of paper into the machine. The

' leading` edge of the vsheet is introduced be tween the platen and the rear pressure roll without releasing the latter. The crank 8 ceases,

as to cause thewriting to fall withgreater accuracy upon the'desired line upon the blank, theheadsot' the screws or stop pins may be made eccentric as shown in the drawings, so that by turning them, the desired tine adjustment may be secured, each screw being adjustable in this mannerindependently of the'others. 1n advancing the sheet to the lirst line of writing, the crank may be, swung forwardly,l asat Fig. 4. There; after the crank'may be swung backwardly to the Fig. .3A position vand pressed down, lengagingand-pressing down a pin or screw ron'rw'hich lsaid pin projects. Said arm therebyv pressing down anta-rinor lever is provided with av hub 24wherebyit loosely inountedupon the platen aXle-'2`be-v tween the end of Vthe-platen frame. and .the gear 15. oll releasing the detent' 21,'v an arm 25 ex'- This arm performs the function tending up from said hub being bent in# wardly to form a barQG which swings it 'backwardly to engage a 'pendent finger 27 formed on the paw]` 21 thereby turning said pawl about its pivot 28 to litt the nose 2O above the stop 19, Fig. A spring 29, Fig. 1, engages the arm 22 to return the same after releasing said detent. A spring 30 presses againsta shoulder 31 formed on the detent near its pivot and tends constantly to throw down the nose 20 of the pawl. The latter .has a horizontal slot 32, whereby it engages its pin 28, the purpose of the slot being to permit the springv 30 to throw the detent bodily back, Fig. 3, to cause the nose 2O to ride over the top of the pin 19, whereby the detent is mechanically held in a released position ready for the next forward stroke of the crank 8.

To enable the detent to move automatically from left to right to traverse the helix as the barrel 17 revolves, so that t-he detent may engage all of the stops 19 in succession, l provide upon Jdie gear 13 a snail cani to revolve therewith, whereby an arm 34 is caused to travel from left to right during the revolution ot thegear, said arm having an anti-friction roll 35 to run upon said cam, the latter extending almost entirely around the gear shaft 9 and turning at about one quarter the angular speed of the stop barrel or rack- 1T, the helical series of holes 18 accordingly extending four times around said barrel. The left to right movement of the arm 34 is communicated through a sleeve 36 (sliding upon the shat't 9) and a bar 37 to a sleeve 38 sliding upon a rod 39 and having an arm 4Q in which the pivot screw 28 is sengz.

luble tor line-spacing, of a ringer piece for `pla-ten, a revolubleA succession of stops --arl2. In a typewritin-g macliine, .the' combi-v i'angetlin a heliX or spiral, movement-multiplying gearing between the platen andthe stops, and means to 'coperate With said stops to arrest the platen. 1

nation With. a" revoluble platen, of a linev spacing mechanism includingl a ratchet 'of the platen in its rotation? Wheel, a lever and pawl to operate the same,

moveinentmultiplying gearing between the .ratchet Wheel and kthe platen, and a succession ofstops, Y

13. In a typewriting machine, the combi- 1 nation with a revoluble platen, of a line-' spacing mechanism including-.a ratchet! wheel, a leverandpavvl to operate the same,

movenient-multiplying gearing between the ratchet Wheel andthe platen, a succession of stops arranged in .a helix or spiral, Vand means to' cooperate with said stops serz'atz'm to arrest the platen. i I

le. In a typewriting machine, the combination With'a revolublel platen, ofv a line-g spacing mechanismv including aratchet wheel, a lever and pawl to operatetlie saine,

inovenientemultiplying gearing between the lratchet Wheel and the platen, a succession' of stops arranged in alielix or spiral, vmovement-multiplying gearing between the pla ten and the stops, and means to 'cooperate With said stops Seriate/n to arrest the p laten.

l5. In a typewritin'g machine,` the combination with a platen, of a su'ccessionof.v devices independently adjustable in .linespace ing direction, a rack along Which said delr vices are adjustable, and 'means cooperative with said adjustable devices vto determine the successive arresting points of the platenV movement at consecutive linefsp'acing opernation'with a revoluble'platen, of a line-by- 'line spacinginechanism therefor, including ations.

i6; In a typewiiting machine,`the combi! nation with a platen revolving for line-spac-l ing, of a rack connected theretoto revolve therewith and extending in ageneral circu lar direction, a succession -ot'. devices independently adjustable upon said raclnandA means to cooperate with saidadjust-able. des` vices to determine successive arresting points 17. In a vtypeWriting machine, the combi-k nation with a platen revolving forline spacing, of a helical or spiral rack vconnected to the vplaten to revolve.therevvith,fa series ofl stop'members independently adjustable along said rack, and means-to'coperate Wit-l1 said stop m'embersto determine successive arrestling points of the platen in its revolution.l

. 18.--n a typejvriting machine, the combination lvvith aplaten, of a cylinder connected .thereto'andprovided With a spiral series of peiit'oiaftions, stops constructed` to tit lin any stroke thereof to eaaeet of said perforations, and means to coperate 'Wit-h said stops to determine mechanically the linespacing movements of the platen.

19. ln a typewriting inachine,the combi! iiation with a revoluble platen and sheet 'feeding ,means cooperating. therewith, of -meaiis to arrest the platen at the proper :point tortlie sheet to'be introduced between Athe platen and the sheet feeding means, and

succession of stops to determine the `linespacing` movements .of vthe platen, a fingen` piece to operate theplaten, a member to coloperate with said stops to arrest the platen at consecutive line-spacing'movements thereof', and -ineans for enabling said linger-piece i to releasefsaid coperating member-after the arrest-ofthe platen.

21. ln a ty pevvri"ng machine,'the combi nation with a jplaten, of a ratchet wheel con nectedthereto, a lever, a paWl to operate .the

ratchet vheel,`a succession of stops, amenibei"v to engage said stops v.in succession to arrest the platen at consecutive line-spacing movements thereof, and means operable by said lever to release said stop-engaging membcr.-

' 22. 4Inga typewriting machine, vthe combination with a platen, of a ratchet wheel conf nected thereto, a lever, a pawl to operate theI ratchet vvlieeL--a succession-of stops, a membei' to engage said stops in siiccessionfto arrest `the platen at consecutive lines acing movements thereof, and means-opera le bysaid .leverl at the completion. of theretiirn release said stop-engaging member. v p

23. nja typewriting machine, the combia reciprocatory driver, a succession of inde- .pendently adjustable stops, and means to enable sa-id driver-v at. each stroke to turn the platenv until 'arrested by the nearest of said stops, g v

24.71 Ina typevvritin machine, the combi'- 'nation with a revolublle platen, of a rotary nation with a revoliib e platen, of a rotary member connected v.thereto and provided witlya series of holes extending 1n a general circular direction, and a succession of stops i member @connected thereto and provided `with a seriesot' holes' extending in a general insertihle into said holes to be held thereby in positions to correepond with the blanks on the page to be written; means being provided to release the detent aitei each arrest of the platen.

96. ln a' typewriting machine, the eombb nation with a revolulole platen of a rotary member connected tothe platen and provided with a helical or spiral winding ,series of holes, stops independently insertiblc in said holes to be retained thereby, and a detent being mounted to engage the stops in succession to arrest the platen.

27. ln a typewriting machine, the combination with a revoluble platen, of a rotary member connected thereto and provided With a series of holes extending in a general circular direction, and a succession ot .stops insertible into said holes to be held therebj' in positions to correspond with the blanks on the page to written; a detent heilig mounted to engage the stops in succession to arrest the platen; each of said stops being in the form of a pin projecting from its hole or seat and having an eccentric head or iiange, so that by rotating the stop in its seat a tine adjustment is obtained for the purpose of arresting the platen and the sheet thereon in exact position to receive the next line of writing.

28. In a typewriting machine, the combi nation With a revolul'ile platen, ot a rack connected thereto and having means to hold a succession of stops, means to cooperate with the stops to arrest the line-spacing movements of the platen. and means being provided for eilecting tine individual adjustments of the stops.

29. ln a typei'riting machine, the combination with a revoluble platen, oi a linespacing mechanism including a succession of stops arranged in a helix or spiral, 1 1 re- Y' leasable stopenga`ing member. means to cause said member to engage the stops seriatz'm to-arrest the platen at predetermined intervals in its movements in linespacing direction. and means for causing the stop-engaging member after .copcrating with all of saidstops to begin again with the first stop in the series. i

30. 1n a typewriting machine. the combination with a rcvoluble platen, of' a line spacing mechanism including a succession of stops arranged in a helix, a detent to engage said stops, and means to give the detent a late al i'noveinent to correspond with the pitch of the helix.

31. ln a typewriting machine, the combination with a revolnble platen. of a linespacing mechanism including a succession ot stops arranged in a helix,., a detent to engage isaid stops. meansl to give the detenta lateral mo.'ement to correspond. with the pitch oil, the helix, and means totreturn the detent to normal position after moving 'the width ot the helix.

In a typewriting machine, the combination with a revoluble platen, of a succession ot stops arranged in a helix and connected to the platen, a detent, means connected to the platen to move the detent lat.

erally to correspond with the pitch of the helix. and means to cause the detent -to return to normal position after moving the width ol the helix. l

35%. ln a typewriting machine, the combination with a revoluble platen, of a succes sion ot stops arranged in a helix and connected to the platen, a revoluble cam also connected to the platen, a detent mounted to engage the stops in succession, and means engaging said'cam to move said detent laterally to correspond to the pitch ofthe helix.

254. .ln a typewrit'ing` machine, the combin nation with a revoluble platen, of a succession ot stops arranged in a helix and connected to the platen, a lrcvoluble cam also connected to the platen, a detent mounted to engage the stops in succession, and meansv engaging said cam to move said detrent laterally to correspond to the pitclrot' the helix; a spring being provided to return the 'detent to normal position after reversing said helix.

In a typewriting machine, the combination with a revoluble platen, of a helical series of stops connected thereto, a slide mounted on a guide extending along the platen, a cam connected to the platen to operatcsaid slide, and a detent upon said slide to engage the stops in succession.

36. In a typewriting machine,-the combination with a rcvoluble platen.. of a helical .series of stops connected thereto. a slidtx mounted on a `guide extending along the platen. a cani connected to the platen to operate said slide. and a detent upon said slide to engage the `stops in succession; said cam having a snail form, and a spring ,being provided !o return the slide to normal position after the slide is oixierated by the cam.

il?. ln a t \pcwriting machine, the combination with a revoluble platen. ot' a revoluhle barrel having seats in helical arrangement thereon tor a succession oi stops. move.- ment -multipl ving gearing hetw een the platen and said barrel. a detent to engage said stops in succession, anda cam to cause the detent to traverse the helix.

BS. ln a typewriting machine, the combination with a rcvoluble platen, of a ratchet wheel, a lever, a pawl to operate the ratchet wheel, a cam rigidly connected to the ratchet wheel, movement-multiplying gearing between the ratchet Wheel and the platen, a

revoluhle barrel ,carrying a helical series otstops, movementmultiplying gearing between the platen afnd the barrel, a detent to engage 'the stops in succession, and means for enabling' the cam to move the detent across the helix at a speed corresponding to the movement of the helix, and means to return the detent to normal position.

39. In .a typeivriting machine, the combi' nation With a-platen, of a line-spacing mech- 40. In a typcivriting machine, the combination with a revoluble-platen, of a linev spacing mechanism therefor, including a barrel connected to the platen, a helical series of stops upon the barrel, a detent to en- .I

gage the stops, a-ratcliet Wheel connected to the platen, a lever and pa'ivl to turn the ratchet Wheel, a bar to release the detent after each arrest of the platen, means lfor enabling the lever to operate the bar, and' means for causing the detent to traverse the helix.

41. In a typevvii'ting macliine,ithe combination with revoluble platen, of a ratchet,

Wheel, a lever, a paivl to operate the ratchet Wheel, a' cam rigidly connected tothe ratchet Wheel; movement-multiplying gearing be- .tween the ratchet Wheelv and the platen, a

revoluble barrel carrying a helical series oi?v stops, movement multiplying gearing between the platen and the barrel, a detent vto' engage the stops in succession, means for enabling the cam to move the detent across the helix at a speed corresponding to the movement of. the helix, means to return the dctent to normal position, and a bar extending along the helix barrel to eli-gage said detent to release the saine, and means for enabling the lever to' operate said bar after each arrest of the platen.

4t2. In a typewriting machine, the combination with a platen, of a line-spacing mechanism including a series of stops, a detent to engage said stops in succession, means to release the detent, and a spring to cause the detent to overshoot each p when released.

I 43. In-a typevvritingmachine, the combination with a platen, of a line-spacing mechA aiiism including a series of stopsa detent to engage said stops in succession, means to release the detent, and a spring to cause the detent to overshoot each stop when released;

said spring constructed also to press the dei 'tent into engagement with the stop.

v44. In a vtypevvriting machine, the combi- I nation With'aplaten frame, of a revoluble vplaten, a vratchet Wheel, a shaft mountedA `-upon the platen fraineand carryingsaid ratchet Wheel, a lever Vmounted upon said shaft and having a pawl to operate said ratchet wheel, `a gea-r on vsaid sh'at,-a ]g}ilinionV l A on Vthe platen casing and meshing Wit y the platen frame and engageable by the firstmentioned lever uponits return to normal position, a bar upon said lever and extending along said barrel to engage said detent to release the saine, and a spring for returning said slide at the completion of the operation of said cam.

45. Iii a typewritiiig machine, the combination with a platen, of a liiie-by-line spacing mechanism for said platen including a succession of line-by-linespacing stops connected to said platen to rotate therewith, a reciprocatory driver for the platen, means operated by said driver to engage said stops for arresting the platen line-by-line, and means connected tothe driver to operate automatically for releasing said engaging,

means from the line-spacing stop after each line-spacing operation. l

46. Iiia typewriting machine, the combination with a platen and a series of linespacing stops, of a platen driver, a device. to engage said stops in succession to determine the limits of the line-by-line movements o't' the platen eliected by said driver, and means to set said stop-engaging device back to position to rcngage the lirst slop in the series. 4T. In a typewriting machine, the combination with a platen and a series of linespaeing stops positively connected to the platen to move therewith, of a platen driver, a device to engage said stops in succession to determine the limits of the line-by-line movements of the platen effected by said driver, and means to set said stop-engaging device back to position to rengage the firststo'p in the series.

t8. In a typewriting machine, the combination with a platen and a series of linespacingfstops, ot' a platen driver, a device to 'engage said stops iii succession to determine the limits of the line-by-line movements of the platen effected by said driver, a spring, and a trip rendered eilective b v the moveynient of said driver, to permit said spring to lOl! platen effected thereby, a `spring tending to set said detent back to a position to engage -the first stop in the series, and a trip connected to the platen to move therewith to permit said spring to act.

50. In a typevvriting machine, the combination with a revoluble platen, ot' a ratchet wheel connected thereto, a lever having a pawl to drive the ratchet Wheel. and platen, a series of stops connected to the platen, a detent to engage said stops in succession to determine the limits of the line-by-line I movements vof .the platen effected by said lever and paWl, automatic means being provided to release the detent from the stops to permlt further advances of the platen, a

spring, and a trip 'rendered effective by the movement of the lever topermit saill spring to set the detent back to a position to re-ngage the first stop in the series. A

5l. ln a typewriting machine, the combination with a revoluble platen, of a line-byline spacing,` mechanism therefor, including a reciprocatory driver, a succession of independently adjustable stops, means to enable said driver' at each stroke to turn the platen until arrested by the nearest of said stops,

and means to enable the driver and platen Y at each stroke tol pass the stop by which they were arrested.

JOHN JOSEPH COOPER. Vitnesses T. L. RAND, H. D. JAMESON. 

